KR101891196B1 - Gas detector And Operating method using the same - Google Patents

Abstract

The present invention relates to a water treatment apparatus comprising a cylinder to be mounted through a treatment container, a plurality of detection tubes mounted through the tubular body and spaced apart from each other in a radial direction of the treatment vessel and exposed at least partially, A first detector capable of detecting the temperature of the gas flowing through the detection tube, and a second detector communicating with the inside of each detection tube and capable of detecting at least one of the pressure and the component of the gas flowing through each detection tube, A process of detecting the temperature, the pressure and the component of the gas at a plurality of positions in the radial direction of the container, the process of calculating the calorie and the utilization rate of the gas using the temperature, the pressure and the component of the detected gas And determining a charging condition for each position of the treated material by using the calorie and the utilization rate of the calculated gas, A gas detection device capable of variously detecting the atmosphere of the treatment container during the process by a single device, and a method of operating using the same.

Description

TECHNICAL FIELD [0001] The present invention relates to a gas detector and a method of operating the same,

The present invention relates to a gas detection apparatus and a method of operating the same, and more particularly, to a gas detection apparatus capable of variously detecting the atmosphere of a treated water container by a single apparatus while a process water process is being performed, .

The blast furnace charge includes iron ore, sintered ore and coke which are charged into the blast furnace during the blast furnace process for the production of iron ore. The blast furnace is charged with the blast furnace charge, then melts it while blowing hot air to produce blast furnace wire.

In order to increase the efficiency of the blast furnace process, the temperature change inside the blast furnace is measured at each position spaced apart in the radial direction of the blast furnace, and the distribution of the gas in the blast furnace is derived from the radial direction of the blast furnace, Adjust the distribution of charges. For example, the distribution of the charge of the blast furnace is adjusted by analogy with the concentration of the gas flow at a relatively high temperature.

On the other hand, during the blast furnace process, the position of the fusion zone (the predetermined region inside the blast furnace where the iron component of the blast furnace material is melted, has a constant temperature) is constant, so that the gas amount distribution in the blast furnace can be inferred in the above manner. However, when the blast furnace process is performed, the position and shape of the fusebands change from time to time, and the flow rate of the gas passing through the fusebox varies. Therefore, the temperature value measured at each position in the blast furnace can not guarantee the gas amount distribution inside the blast furnace. That is, the above-mentioned method can not accurately deduce the gas amount distribution inside the blast furnace.

In addition, a method for increasing the efficiency of the blast furnace process is to sample the gas at one point where the gases in the blast furnace are discharged and then calculate the gas utilization rate of the blast furnace charge based on the result, There is a way to evaluate efficiency.

For example, in order to evaluate the results of changes in the operating efficiency due to the operation measures such as the change of the charge distribution, one gas component analyzer is installed on the upper part of the blast furnace to analyze the carbon monoxide and carbon dioxide content of the gas, Based on the results, the effect of the operation measures such as the change of the charge distribution on the blast furnace operation efficiency is evaluated.

However, since the above method is a method of calculating the gas utilization rate of the entire blast furnace charge by sampling the gas at a position inside the blast furnace, the gas utilization rate at each position in the blast furnace can not be known. Therefore, it can not be known whether the change in the gas utilization rate is caused by the change in the air permeability or the charging property at any point in the radial direction of the blast furnace.

The gas utilization ratio is not simply proportional to the temperature or the gas amount distribution inside the blast furnace, but also varies depending on the position and shape of the fusing bar, the gas amount change depending on the air permeability condition of the fusebands, the iron ore distribution in the blast furnace for the radial direction of the blast furnace, The amount of gas passing through the charge, and the temperature distribution inside the blast furnace.

For example, a large amount of coke is charged and a large amount of gas is discharged from the center of the furnace, which has good air permeability. Although the temperature is measured high, the gas utilization rate is low because there is almost no iron ore. On the other hand, a sintered ore having a small particle size is loaded and the air permeability is bad, and a small amount of gas is discharged from the inner wall side, the temperature is low and the gas utilization rate is low. That is, it is difficult to estimate the gas utilization rate distribution inside the blast furnace in the radial direction of the blast furnace with the temperature distribution inside the blast furnace and the gas utilization rate of the entire blast furnace rather than one-to-one correspondence between the temperature distribution and the gas utilization rate.

That is, it is difficult to accurately evaluate the efficiency of the result of adjusting the distribution of the blast furnace in the radial direction of the blast furnace in the above manner, and it is difficult to know which blast furnace charge distribution condition represents the optimum process efficiency.

Techniques that constitute the background of the present invention are disclosed in the following patent documents.

KR 10-2003-0006123 A KR 10-2002-0088475 A CN 2014-103729571 A JP 2013-019706 A JP 2506485 B2

The present invention provides a detection device capable of variously detecting the atmosphere of the treatment container with one device while the treatment process is being performed.

The present invention provides a detection device capable of variously detecting a gas atmosphere in a treated material container by a single device.

The present invention provides a detection device capable of detecting the temperature, pressure and component of the atmosphere gas at a plurality of radially spaced positions of the processing container.

The present invention provides a method of operating which can determine the charging conditions for each location of the treated material using the temperature, pressure and components of the gas detected inside the treated material container.

A gas detection device according to an embodiment of the present invention comprises: a cylinder to be mounted through a process container; A plurality of detection tubes mounted through the cylinder and spaced apart from each other in a radial direction of the processing container and exposed at least partially; A first detector installed inside each detection tube and capable of detecting the temperature of gas flowing through each detection tube; And a second detector communicating with each detection tube and capable of detecting at least one of a pressure and a component of a gas flowing through each detection tube.

The first detector may include a temperature meter, and the second detector may include a pressure meter and a component analyzer.

And a purge gas supplier provided so as to be capable of supplying purge gas to each of the detection tubes.

And an operation controller that controls the purge gas supplier to operate alternately with the first detector and the second detector.

The respective flow velocity values are calculated using the pressure of the gas flowing through the respective detection tubes, and the calorific value of the gas flowing through each detection tube can be calculated using the temperature of the gas flowing through each detection tube and the respective flow velocity values And a calculator capable of calculating the utilization rate of the gas using the components of the gas flowing through the respective detection tubes.

A method of operating a method according to an embodiment of the present invention includes the steps of: Inserting a gas detector into the vessel; Detecting a temperature of the gas at a plurality of positions in a radial direction of the container; And detecting at least one of a pressure and a component of the gas at a plurality of positions in the radial direction of the vessel.

Calculating a calorie and a utilization rate of the gas using the temperature, pressure, and components of the detected gas; And determining a charging condition for each position of the processed material by using the calorie and the utilization rate of the calculated gas.

Calculating a flow velocity value for each position from a pressure of gas detected at a plurality of positions; And calculating the calorific value of the gas by position using the flow velocity value calculated for each position and the temperature of the gas detected at a plurality of positions.

And calculating a utilization rate of the gas by using the components of the gas detected at the plurality of positions.

Determining a charging condition for each position of the processed product by comparing the calorific value of the calculated gas with a reference calorie and determining a granular condition of the processed product charged to the corresponding position according to a result of the comparison; And comparing the usage rate of the calculated gas with the reference utilization rate to determine the granularity condition and the ingredient content condition of the processed material to be charged to the corresponding position according to the comparison result.

Supplying the purge gas before or after the process of detecting the temperature of the gas or supplying purge gas before or after the process of detecting at least one of the pressure and the component of the gas of the gas.

A process of detecting the temperature of the gas and a process of detecting at least one of the pressure and the component of the gas may be performed at the same time.

According to the embodiment of the present invention, the gas atmosphere inside the processing container can be variously detected by a single device, and the temperature, pressure, and components of the gas are detected at all at radially spaced positions of the processing container can do. That is, during the process of the treated product, the internal gas atmosphere (or gas state) of the treated product container can be variously detected by a single apparatus, thereby monitoring the state of the treated product process in real time, The processing conditions of the inside of the processing container can be adjusted by determining the charging conditions for the positions of the processing materials.

For example, when the present invention is applied to a scouring process (or a blast furnace operation) for producing molten iron, it is possible to smoothly detect the temperature, pressure and composition of the gas flowing in the blast furnace at a plurality of locations inside the blast furnace, And it is possible to accurately determine the treatment state of the blast furnace charge by calculating the amount of heat and the utilization rate of the gas at each position in the blast furnace from the detected result. Therefore, the properties of the blast furnace charge can be controlled for each position in the blast furnace so that the heat quantity of the gas and the utilization efficiency at the respective positions in the blast furnace have a desired value. From this, it is possible to improve the process efficiency of the blast furnace operation and the quality of the molten iron produced in the blast furnace operation.

In this way, the efficiency of the operation is evaluated from the gas flow rate and utilization rate analyzed in the radial direction of the blast furnace, and the distribution of the blast furnace charge is adjusted based on the evaluation result, so that the charging water distribution adjustment can be quickly and accurately obtained. In addition, since the evaluation of the efficiency of the operation can be obtained according to the characteristics of the blast furnace charge or the change of the mixing method, the utility of the charge can be evaluated accurately. That is, in the case of pellets or orthodontic light among the charges, only the middle portion is charged in the radial direction of the blast furnace, and no charging is performed in the peripheral portion or the central portion. At this time, the gas utilization ratio at each position in the blast radial direction can be analyzed, and the influence according to the characteristics can be accurately evaluated. In detail, it is easy to accurately evaluate the influence of the pellet and the size of the light on the operation efficiency, such as the air permeability and the gas utilization rate, by obtaining both the gas flow rate and the gas utilization rate in the middle part. Also, it is easy to evaluate the increase of the gas utilization rate according to the mixing method of the nut coke used mainly in the blast furnace, which is advantageous in that it can be usefully used for determining the usage amount and the usage position.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a process container and a gas detection device according to an embodiment of the present invention; FIG.
2 and 3 are schematic views showing a gas detection device according to an embodiment of the present invention.
4 is a graph showing an example of a result of detection of a gas atmosphere in a treated material container according to an embodiment of the present invention.
FIG. 5 is a state diagram for explaining a method of controlling properties of a processing object charged into a processing material container according to an embodiment of the present invention. FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described below, but may be embodied in various forms. It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. BRIEF DESCRIPTION OF THE DRAWINGS The drawings may be exaggerated for purposes of describing embodiments of the present invention, wherein like reference numerals refer to like elements throughout.

The present invention relates to a gas detection device capable of variously detecting an internal gas atmosphere of a treatment material container by a single device during a process of a process material, and a method of operating using the same. Hereinafter, embodiments will be described with reference to a steelmaking process (blast furnace operation). Of course, the present invention can be applied variously to detecting the internal atmosphere of various treatment containers in various industrial fields.

FIG. 1 is a schematic view showing a process container and a detection device according to an embodiment of the present invention, and FIG. 2 is a schematic view showing a part of the detection device, for example, And Fig. 3 is a schematic view showing a portion located outside the processing container, which is the remainder of the detecting device according to the embodiment of the present invention, except for the portion shown in Fig.

FIG. 4 is a graph showing an example of a result of detection of a gas atmosphere in a treated water container according to an embodiment of the present invention, and FIG. 5 is a graph showing an example of a result of detection of a treated water And a state diagram for explaining a method of controlling constellation.

1 to 5, a treatment vessel and a gas detection apparatus according to an embodiment of the present invention will be described in detail.

The treatment vessel 10 according to the embodiment of the present invention may include a furnace blast furnace as a vessel that can be treated and charged with the treatment substance therein. Of course, the treated vessel 10 is not particularly limited to the blast furnace.

The processing vessel 10 includes a main body 10 having a bow inlet at an upper portion thereof and a refractory portion formed in a cylindrical shape having a space therein and a refractory portion formed inside the iron core 10, A hot air supply unit 13 formed in a ring shape around the lower portion of the main body 10 and connected to the air guide 12 and a hot air supply unit 13 for supplying a melted material, A plurality of outlets 14 spaced apart from the lower side of the main body 12 and communicating with the inside of the main body 10 to measure the stress transmitted to the screed of the main body 11 or applying a current to the inside of the main body 11 And a bath surface height measuring device 15 for measuring the height of the melted material accommodated in the main body 10 in such a manner as to measure a current.

The treated material may include blast furnace charge such as iron ore, sinter ore and coke. The treated water is charged into the treated water tank 10 and hot air is injected into the treated water tank 10 through the tuyere 12. The coke is burned at the lower part of the treated vessel 10 by hot air to generate carbon monoxide and carbon monoxide is moved from the lower part to the upper part of the treatment vessel 10 to contact the iron ores and the sintered ores to reduce and melt the iron components.

That is, the treated water vessel 10 generates carbon monoxide by burning the coke in the blast furnace charge charged in the interior of the treated water vessel 10 using the hot air injected into the treated water vessel 10, And is a high-temperature and high-pressure reactor for producing molten iron by reducing and melting iron ores and sintered ores in the blast furnace charge.

In order to increase the efficiency of the operation using the treatment vessel 10, the carbon monoxide generated in the lower part of the treatment vessel 10 smoothly moves upward, so that it needs to make good contact with the treatment object. For this purpose, It should have a formal ventilation. The opposite coke in the treated water is mainly charged in the vicinity of the central portion of the treated water vessel 10 in the vertical direction with respect to the center axis of the treated water vessel 10 and the high- The small sintered ores of the treated material are mainly charged to protect the sidewall of the treated vessel 10 from the sludge. The iron ores or opposing sintered ores of the opposing grains are charged in the middle portion between the central portion and the peripheral portion of the treatment vessel 10. Therefore, the reduction reaction of iron ores by carbon monoxide occurs actively in the middle part of the treatment vessel 10.

As viewed in the radial direction r of the treated water container 10, the inside of the treated water container 10 has the highest temperature at the center portion and the lowest temperature portion of the smallest portion. The reason for this is that a large amount of the reducing gas at a high temperature generated in the combustion zone (a predetermined region inside the blast furnace in which the coke is burnt in the blast furnace charge) is discharged to a central portion because only the opposing coke is charged in the center portion, This is because small sintered light of about 5 to 10 mm is charged on the inner wall side of the peripheral portion of the water container 10, so that a small amount of the reduced gas of high temperature is discharged due to the ventilation resistance. Therefore, the shape of the temperature distribution in the radial direction (r) of the treated vessel (10) has a shape with a high temperature at the center portion and a low temperature at the peripheral portion.

However, it does not have a pattern having a constant air permeability in the radial direction (r) of the treated water container 10 depending on the form in which the charged material is accumulated, for example, the thickness of the coke, the iron ore and the sintering light, That is, there are various air permeability changes in the radial direction (r) according to the distribution form of the loaded object, and the gas velocity and the temperature are different in the radial direction (r) of the treated object vessel (10).

In the embodiment of the present invention, at least one gas detection device 200 described later is mounted on the upper part of the main body 11 of the treated water container 10 in order to increase the efficiency of operation using the treated water container 10, Is inserted into the interior of the main body 11 at least at one position in the circumferential direction of the main body 11 and the gas flowing in the inside of the processing vessel 10 at a plurality of positions in the radial direction r of the processing vessel 10 Can be detected.

Therefore, the charging conditions can be adjusted in consideration of various factors such as the gas flow rate, flow rate, and the composition depending on the charging thickness and the air permeability change for each component or each position of the processed product, and the operation efficiency can be quantitatively evaluated. Particularly, the position of the radial direction r in which the charging condition is to be adjusted for improving the operating efficiency based on the flow rate and the composition of the gas detected at a plurality of positions in the radial direction (r) It is possible to promptly determine the charging condition of the position, and quickly take measures.

Further, since the gas detection device 200 is installed so as not to be in contact with or inserted into the process water, but to be spaced above the process material, the gas detection device 200 can operate within the process material container 10 for a desired time, The temperature, velocity and components of the gas flowing inside the water container 10 can be measured all at once.

The gas detecting apparatus 200 according to the embodiment of the present invention is inserted into the interior of the processing vessel 10 to change the state of the gas flowing inside the processing vessel 10 in the radial direction r of the processing vessel 10 ), And it is possible to calculate the amount of heat and the utilization rate of the gas corresponding to each position. The gas detection device 200 includes a cylinder 210, a detection tube 220, a first detector 230, a second detector 240, and a calculator 270, And may further include a feeder 250 and an operation controller 260.

The tubular body 210 may be formed to extend in the radial direction r of the processing container 10. The tubular body 210 can be mounted through the main body 11 of the treatment vessel 10 and is located on the upper side of the treatment vessel inside the main body 11 through the upper portion of the main body 11, 10 in the radial direction r. The tubular body 210 can be detachably mounted to the main body 11 and radially installed at a desired position of the main body 11. [

The detection tube 220 may be a hollow tube, and may include a plurality of, for example, six tubes. Each tube may be inserted into the tube 210 through the tube 210. Each of the detection tubes 220 can extend in the radial direction r of the processing container 10 inside the cylinder 210.

Each of the detection tubes 220 has one side communicating with the inside of the processing container 10 through an outer peripheral surface of the tubular body 210 in a direction crossing the tubular body 210 and the other side communicating with the outside of the processing container 10 And may extend through the tubular body 210.

The number of the detection tubes 220 is determined according to the number of positions for measuring the state of the gas inside the processing vessel 10. For example, when measuring the state of the gas at four positions spaced apart in the radial direction (r) of the treated water container 10, four detection tubes 220 may be provided, When measuring the state of the gas at six positions spaced apart in the radial direction (r) of the vessel 10, six of the detection tubes 220 are provided.

One opening of each detection tube 220 is spaced apart from each other in the radial direction r of the processing container 10 along the outer circumferential surface of the cylinder 210 and passes through the outer peripheral surface of the cylinder 210, ). ≪ / RTI > One of the detecting tubes 220 can be exposed to the inside of the processing vessel 10 at a position where one opening is aligned with the vertical center axis of the processing vessel 10, The opening can be exposed to the interior of the processing vessel 10 at a position spaced outwardly in the vertical center axis of the processing vessel 10.

The gas for each position can be introduced into the interior of the processing vessel 10 through one opening of each detection tube 220 in the radial direction r of the processing vessel 10. The other side of the detection tube 220 may be connected to, for example, an exhaust gas treatment facility (not shown). An automatic valve may be provided on the other side of each detection tube 220, so that the emergency detection tube 220 can be quickly shut off or opened.

The first detector 230 may be installed inside each detection tube 220 to detect the temperature of the gas flowing through each detection tube 220. The first detector 230 includes a temperature gauge, and may in particular comprise a thermocouple. The first detector 230 may be installed inside the detection tube 220 such that the end of the first detector 230 is close to one opening of the detection tube 220. The first detector 230 is connected to the calculator 270 and can transmit the respective gas temperatures to the calculator 270.

The second detector 240 communicates with each detection tube 220 and can detect at least one of the pressure and the component of the gas flowing through each detection tube 220. The second detector 240 may include a pressure gauge and a component analyzer.

The pressure gauge may be a pressure gauge having various structures capable of measuring the pressure of the gas flowing through each of the detection tubes 220. In an embodiment of the present invention, a pressure gauge using a pitot tube is exemplified. The pressure gauge may be installed in each detection tube 220.

The pressure measuring device includes a sensing pipe 220 and a sensing pipe 220. The pressure measuring device 220 includes a sensing pipe 220 and a sensing pipe 220. The sensing device 220 includes a sensing pipe 220, A dynamic pressure meter 242 connected to the pitot tube 241 at the outside of the tube 241, the processed vessel 10 and the cylinder 210, a predetermined amount of a predetermined amount of the detection tube 220 spaced from one opening of the detection tube 220, A static pressure pipe 243 connected to the inside of the detection pipe 220 while contacting the inner circumferential surface of the detection pipe 220 and a static pressure gauge 244 connected to the static pressure pipe 243. On the other hand, the pitot tube 241 may be a pitot tube having a diameter of 1/8 inch. The pressure measuring device described above can measure the pressure of the gas flowing through the one opening position of each detection tube 220. Of course, the pressure measuring device is not limited to the above-described configuration and may have various configurations within a range satisfying that the pressure of the gas flowing into one opening of each detection tube 220 can be measured smoothly, And a pressure gauge capable of measuring the gas pressure at one opening of the detection tube 220 can be variously applied.

The dynamic pressure gauge 242 and the static pressure gauge 244 are connected to the calculation unit 270 and the dynamic pressure of the gas detected by the dynamic pressure gauge 242 by the pitot tube 241 and the dynamic pressure of the gas detected by the static pressure gauge 243 244 may be transmitted to the calculation unit 270.

The component analyzer 245 samples the gas flowing into each detection tube 220 to analyze components such as carbon monoxide and carbon dioxide contained in the gas and then analyzes the component content, volume fraction, mass fraction, or mole fraction And various gas analyzers capable of detecting various types of gas.

The component analyzer 245 may be connected to each detection tube 220 on the downstream side of each of the static pressure pipes 243 by a plurality of connection pipes 246. Each of the plurality of connection pipes 246 may be equipped with an automatic valve, so that each connection pipe 246 can be quickly shut off in an emergency.

The purge gas supplier 250 prevents dust from accumulating on one opening of each detection pipe 220, the end of the pitot tube 241 and the thermocouple, and injects a purge gas of high pressure into each detection pipe 220 The tip of each pitot tube 241 and the thermocouple can be cleaned.

The purge gas supply unit 250 is provided to supply purge gas to each of the detection pipes and includes a purge gas supply pipe 251, a supply branch pipe 252, a first valve 253, a second valve 254, (255).

The purge gas supply pipe 251 is a main supply pipe through which the purge gas flows, and purge gas can be supplied from a separate purge gas container (not shown). A plurality of supply branch pipes 252 may be provided and each of the detection pipes 220 and the purge gas supply pipe 251 may be connected to each other. A first valve 253 is mounted to each supply branch 252 and a second valve 254 is mounted to each detection tube 220 and is spaced from the supply branch 252 to the component analyzer 245 side. The main valve 255 can be mounted on the purge gas supply pipe 251 on the upstream side of the supply branch pipe 252 based on the flow of the purge gas. The automatic valve may be mounted away from the main valve 255 to the supply branch 252 side. The automatic valve serves to quickly shut off the purge gas supply pipe 251 in an emergency.

The opening and closing of the first valve 253 and the second valve 254 are controlled to be opposite to each other. The second valve 254 is shut off when the first valve 253 is opened and the second valve 254 is opened when the first valve 253 is shut off. The operation of these valves is controlled by the actuation controller 260.

The operation controller 260 controls the first valve 253 and the third valve 255 so that the gas (the gas flowing in the treated vessel 10) and the purge gas alternately flow into each detection tube 220 And with such control, can control the purge gas feeder 250 to alternate with the first detector 230 and the second detector 240.

For example, the actuation controller 260 operates the first detector 230 and the second detector 240 to shut off the first valve 253 and open the second valve 254. Thereafter, the actuation controller 260 opens the first valve 253 and disengages the second valve 254 while stopping the first detector 230 and the second detector 240. At this time, a purge gas such as nitrogen gas is injected into each detection tube 220, and the opening of the detection tube 220, the end of the pitot tube 241, and the thermocouple are cleaned. The actuation controller 260 then activates the first detector 230 and the second detector 240 to shut off the first valve 253 and open the second valve 254.

On the other hand, the temperature, pressure, and components of the gas can be detected together as the operation controller 260 simultaneously activates the first detector 230 and the second detector 240.

The operation controller 260 can control the first detector 230, the second detector 240, the first valve 253, and the second valve 254 so that the above-described series of processes are repeated at regular time intervals , So that the opening of one side of the detection tube 220, the end of the pitot tube 241, and the thermocouple are cleaned at regular time intervals.

For example, the cleaning of each detection tube 220, the pitot tube 241 and the thermocouple by the operation controller 260 is performed once in about 15 minutes, and several to several tens of seconds are performed for each rotation. Thus, it is possible to prevent dust accumulated in the gas from being deposited on the surface of the thermocouple, the end of the pitot tube 241, and the surface of the thermocouple.

The calculation unit 270 can calculate the flow velocity values of the respective gas through the detection tubes 220 by receiving the pressure of the gas flowing through the respective detection tubes 220. Also, the calculating unit 270 can calculate the calorific value of the gas flowing through each detection tube by using the temperature of the gas flowing through each detection tube 220 and the respective flow velocity values. The calculation unit 270 can calculate the gas utilization rate by using the components of the gas flowing through the respective detection tubes 220. The concrete method of calculating the flow rate value, the calorific value of the gas, and the utilization rate by the calculation unit 270 is as follows.

For example, the calculation unit 270 can obtain the flow velocity value of the gas using the following relational expression (1).

Relation 1) V = c [2 g × (P _d ^/ ρ)] ^1/2

Where V is the flow velocity, c is the Pitot tube constant, g is the gravitational acceleration, P _d is the pressure difference between the static pressure and the dynamic pressure, and ρ is the gas density. That is, the flow velocity value can be calculated by using the difference between the positive pressure and the dynamic pressure.

Next, the calculation unit 270 can obtain the calorific value of the gas using the following relational expression (2).

(Or the flow area of the gas corresponding to the position) x the temperature of the gas (the flow rate of the gas corresponding to the position)

As described above, the calorific value of the gas at each position can be calculated using the flow velocity value, the flow area, and the temperature of the gas. At this time, the flow area is defined, for example, at a plurality of positions in the radial direction (r) of the treatment vessel 10, and the inner space of the treatment vessel 10 is divided into a plurality of sections And the area of each section can be defined as the flow area. The plurality of sections are concentrically arranged and can correspond one to one to each position where the temperature of the gas is measured.

Further, the calculating unit 270 can obtain the utilization rate of the gas by using the following relational expression (3).

Relation 3) Gas utilization rate = (CO ₂ content) / [(CO ₂ content) + (CO content)]

The gas utilization rate is a numerical value obtained by quantifying the degree of reduction of the iron ore component in the gas produced in the lower part of the treatment vessel 10, and the gas utilization rate at each position can be calculated using the above relational expression 3. The closer the gas utilization ratio is to 1, the better the reaction occurs.

As described above, the gas detection device 200 detects the gas flow rate, temperature, and components at a plurality of positions in the radial direction r of the treated water container 10, respectively, and calculates the calorie and utilization rates of the gas It is possible. The calorific value and the utilization rate of the gas calculated by the gas detection device 200 can be used for determining the charging condition of the processed product in the operation using the treated product container 10. In addition, it is possible to know the optimum working efficiency by loading the processed material under each condition at each position based on the gas utilization rate. Therefore, it is possible to quickly and accurately determine the optimal operating efficiency It is possible to obtain an adjustment plan for the distribution of treated water. On the other hand, the gas detecting apparatus 200 may further include a judging unit (not shown), and the charging condition of the processed product can be determined in the operation using the treated water container from the calorie amount and utilization rate of the gas.

1 to 5, a method of operating according to an embodiment of the present invention will be described in detail.

The operating method according to the embodiment of the present invention is a method of operating a treated material container 10 such as a blast furnace, which includes a process of preparing a process material in a container, a process of inserting a gas detector into the container, Detecting at least one of the pressure and the components of the gas at a plurality of positions in the radial direction of the container, detecting the temperature and pressure of the gas, And determining a charging condition for each position of the processed material by using the calorie and the utilization rate of the calculated gas.

First, a treated material is provided in a container. At this time, the vessel may be the treatment vessel 10 and may include, for example, a blast furnace. The treated material may include blast furnace charge and may include blast furnace charge such as iron ore, sinter ore and coke. Referring to FIG. 5, the blast furnace charge can be divided into small-sized light and opposing light according to its particle size. In the center portion of the container, opposing coke is mainly charged. In the middle portion, opposing light ), And small-sized light (including sintered ores and small iron ores) is charged into the small-sized portion, for example, the peripheral portion. For example, small light having a particle size of about 10 mm or less is charged in the small particle portion, opposing light having a particle size of 10 to 25 mm is charged in the middle portion, and opposing coke having about 50 to 60 mm is charged in the center portion. On the other hand, the flow of the gas flow in the vessel can be distributed as shown in the drawing at the beginning of the operation due to the charging distribution as described above.

Thereafter, hot air is injected into the container to treat the treated product. For example, when the processed material is charged into the processing vessel 10, hot air is injected into the processing vessel 10 through the tuyeres 12. The coke is burned at the lower part of the treated vessel 10 by hot air to generate carbon monoxide and carbon monoxide is moved from the lower part to the upper part of the treatment vessel 10 to contact the iron ores and the sintered ores to reduce and melt the iron components.

That is, the coke is burnt in the blast furnace charge charged into the inside of the vessel through the intestinal inlet at the top of the vessel by using the hot air injected into the vessel to produce carbon monoxide, and carbon monoxide is used as a reducing agent to remove iron ores and sintered ores Reduced and melted to produce charcoal.

At this time, a gas detector is inserted into the container. The gas detector includes a gas detection device 200 according to an embodiment of the present invention and includes a cylinder 210 of a gas detection device 200 detachably attached to a main body 11 of a process container 10, 11) and inserted into the inside thereof and aligned in the radial direction (r).

Thereafter, the process of detecting the temperature of the gas at a plurality of positions in the radial direction (r) of the container, and detecting at least one of the pressure and the component of the gas at the plurality of positions in the radial direction (r) of the container. At this time, the process of detecting the temperature of the gas and the process of detecting at least one of the pressure and the component of the gas can be performed at the same time. In the embodiment of the present invention, detection of all the temperature, pressure and components of the gas is exemplified.

For example, referring to FIGS. 4A, 4B, and 5, an example of the detection result of the gas atmosphere in the processing container according to the embodiment of the present invention will be described. The gas flow rate is low, the temperature is low, and the utilization rate is high.

Then, the calorific value and the utilization rate of the gas are calculated using the temperature, the pressure and the component of the detected gas, and then the charging condition for each position of the processed product is determined by using the calorific value and utilization rate of the calculated gas.

The process of calculating the calorie and utilization rates of the gas may include calculating a flow rate value for each location from the pressure of the gas detected at a plurality of locations, calculating a flow rate value for each location, and a temperature of the gas detected at a plurality of locations, Calculating a calorific value of the gas for each position, and calculating a gas utilization rate using a component of the gas detected at a plurality of positions. The process of calculating the calorie and the utilization rate of the gas from the detected temperature, pressure, and components of the gas has been described in detail while explaining the gas detection apparatus according to the embodiment of the present invention, and the description thereof will be omitted.

The process of determining the charging condition for each position of the treated product may include a process of comparing the calorific value of the calculated gas with the reference heat quantity and determining the granularity condition of the processed product to be charged to the corresponding position according to the comparison result.

For example, when the calorific value of the gas calculated at one position in the radial direction of the container is included in the range of the standard calorific value, the condition for loading the processed material at the position is maintained. When the calorific value of the gas calculated at the one position is less than the range of the reference calorie value, processing water charging conditions are set so as to relatively increase the charging amount of the opposed light while relatively reducing the charging amount of the small light among the processing water charging conditions at the corresponding position . When the calorific value of the gas calculated at the one position is out of the range of the reference calorie value, processing water charging conditions are set so as to relatively reduce the charging amount of the opposite light while relatively increasing the charging amount of the small light among the processing water charging conditions at the corresponding position .

That is, when the amount of gas heat is larger than the range of the reference calorie value at one position in the radial direction of the container, the loading condition of the processed product is adjusted so that the gas flow rate decreases in one section of the container in the radial direction corresponding to the position. When the amount of gas heat is smaller than the range of the reference calorie value at one position in the radial direction of the container, the loading condition of the processed product is adjusted so that the gas flow rate increases in one section of the container in the radial direction corresponding to the position.

By determining the charging conditions, it is possible to secure the air permeability in one section of the container in the radial direction corresponding to the position, and to set the charging conditions in which the gas can pass smoothly. When the gas flow rate is increased or decreased more than necessary, the frequency of the carbon monoxide component of the gas reacting with the iron component of the treated product is decreased. By controlling the above conditions, the gas and the treated product are reacted well .

That is, it is possible to determine the optimum conditions of the distribution of the amount of small amounts of light such as the small sintered light and the opposed light, such as the opposed sintered orbital light, in the radial direction of the container depending on the result of contrast between the calories of the gas and the reference calorie. At this time, when the position is the center position of the container, the optimum condition of the loading amount of the center coke (or the opposing coke) can be determined.

On the other hand, the range of the reference calorie value at each position can be variously determined according to the specific composition of the treated product, the volume of the blast furnace, the specification of the desired charcoal, and varies depending on each operation.

In addition, the process of determining the charging condition for each position of the treated object includes a process of determining the particle size condition and the ingredient content condition of the processed object to be charged to the corresponding position in accordance with the contrast result, .

For example, when the utilization rate of the gas calculated at one position in the radial direction of the container is lower than the desired utilization rate value, the charging condition of the processed product can be determined such that the utilization rate of the gas is increased. At this time, the utilization rate of the gas is determined by a combination of the temperature, the flow rate, the reaction area and the time of the gas, and they are combined and combined with each other to influence each other. For example, one way to increase the gas utilization rate is to increase the flow rate of the gas, in which case increasing the particle size of the charge to increase the flow rate of the gas will shorten the time for the gas to pass, It affects the utilization of gas. That is, each element has a complex relationship, not independent of the gas utilization.

Therefore, the process of determining the granularity condition and the ingredient content condition of the treated product is a process of determining by try and error method, for example, and the properties of the charged product (DRI, CBP, pellet And sizing light) can be optimized by the trial and error method. The larger the utilization rate of the gas, the better the process efficiency. For example, the condition of the particle size of the treated product can be determined so as to maintain the level of 50% to 60%. Of course, it is also possible to set the condition of the granulated material to be 60% or more.

For example, if the utilization rate of the gas calculated at one position in the radial direction of the vessel is lower than the desired utilization rate value (for example, 0.5 to 0.6), the charging condition of the processing water may be determined so as to increase the charging amount of iron ore And it is possible to determine conditions for charging the processing water so as to reduce the grain size of the iron ore. That is, it is possible to further charge the small sintered ores.

At this time, if the amount of the small sintered ore light is increased at the corresponding position, the gas utilization rate may increase. At this time, the flow rate of the gas decreases due to the small sintered ores, When the frequency is lower than a certain level, there is a point where the utilization rate of the gas is reduced again, and it can be grasped in real time, so that the conditions of charging the processing material when the utilization rate of the gas reaches the peak can be determined.

Since the control of the charging conditions can be performed in a complex manner for each element and the control results of charging conditions can be quickly fed back while calculating the gas utilization rate at each position in real time, Can be obtained.

After determining the loading condition of the treated water through the above process, the operation can be continued while controlling the loading of the treated water by reflecting the same to the operation.

On the other hand, it is possible to supply the purge gas before or after the process of detecting the temperature of the gas, or before or after the process of detecting at least one of the pressure and the component of the gas of the gas. For example, it is possible to repeatedly perform the process of detecting the temperature, the pressure and the component of the gas at intervals of a predetermined time, and to separately inject the purge gas into each of the gas detectors during each process, . The specific operation of the gas detecting apparatus according to the embodiment of the present invention has been described above with reference to the gas detecting apparatus according to the embodiment of the present invention.

According to the above-described embodiment of the present invention, in order to increase the operation efficiency, when taking the action of adjustment of the charge distribution of the processed product, the temperature, pressure and component of the gas are detected at plural positions in the radial direction of the blast furnace, So that it is possible to quickly and accurately determine the optimum operation measure.

That is, it is possible to provide data for increasing the operating efficiency by measuring the flow rate, temperature and composition of the gas at six points in the blast furnace in the blast furnace operation. By using the flow rate, temperature and components of the gas, it is possible to determine the charging position and the charging amount of the sintered ore, and to control the gas flow effectively in the radial direction.

At this time, since the gas flow in the center of the blast furnace can be controlled, the gas which can not be used for the reduction of the treated product and can escape to the upper portion of the treated product through the center portion can be reduced. For example, changing the charging amount of coke to the center of the blast furnace from 6 tons to 3 tons, it is possible to know the increase and decrease of the gas utilization rate and the flow rate of the blast part, the middle part and the center part of the blast furnace, Whether or not a small amount of sintered ores are to be charged into the small part, and so on.

In the case where the gas flow rate on the small-scale side is small, the temperature is low and the gas utilization rate is low during operation, measures are taken to slightly reduce the coke loading amount in the center portion of the blast furnace, or the amount of small- The gas flow rate and temperature are slightly decreased, there is no change in the middle portion, and the gas flow rate and temperature are slightly increased in the small portion. The result of the action according to the change of the charging condition is quickly obtained by the gas detecting device as the flow rate, temperature and component information of the gas, so that the range of the action can be clearly specified, Control can be effectively performed.

On the other hand, improving the operating efficiency in the blast furnace aims at producing a large amount of molten iron with a small reduction ratio. To achieve this goal, it is essential to distribute the gas flow in the blast furnace evenly, thereby increasing the gas utilization rate.

The blast furnace always has a difference in temperature, composition, and velocity of the gas in the radial direction, so that the gas utilization rate is considerably different between the central portion and the peripheral portion. Since the softening and melting characteristics of the sintered ores vary the position and shape of the fusing zone, the gas utilization rate fluctuates rapidly due to such changes, and accordingly, the change of the heat quantity and the utilization ratio of the gas is accurately calculated for each position in the radial direction, By feedback to the adjustment, it is necessary to take action quickly and evaluate the result.

Therefore, when the gas flow rate, temperature, and component of the gas are detected in the radial direction of the blast furnace at the time of operation using the treated water container using the gas detection device according to the embodiment of the present invention, It is possible to change the air permeability at the point, the particle size of the treated water, the properties of the treated water, and the like, thereby improving the operating efficiency. Particularly, in the case of blast furnace operation, it is easy to locate the fuselage zone when using tritium firing, and it is possible to derive the optimum blast furnace operating condition in the technique of using stable tritium with stable operation.

The above-described embodiments of the present invention are for the explanation of the present invention and are not intended to limit the present invention. In addition, it should be noted that the configurations and the methods disclosed in the above embodiments of the present invention may be combined or crossed with each other and modified into various forms, and these modifications may be considered as the scope of the present invention. That is, the present invention may be embodied in various forms without departing from the scope of the appended claims and equivalents thereto, and it is to be understood and appreciated by those skilled in the art that various changes in form and details may be made therein without departing from the spirit of the invention You will understand.

10: Processed water container 11: Body
200: gas detection device 210:
220: detection tube 230: first detector
240: second detector 250: purge gas feeder
260: Operation controller 270:

Claims (12)

A cylinder to be inserted through the treated water container;
A plurality of detection tubes mounted through the cylinder and spaced apart from each other in a radial direction of the processing container and exposed at least partially;
A temperature measuring unit installed in each of the detecting tubes and capable of detecting the temperature of the gas flowing through each of the detecting tubes; And
A pressure gauge communicating with each of the detection tubes and having a dynamic pressure system and a static pressure system for detecting the dynamic pressure and the static pressure of the gas flowing through each detection tube;
The respective flow velocity values are calculated using the dynamic pressure and the static pressure of the gas flowing through the respective detection tubes, and the respective flow velocities are calculated using the temperature of the gas flowing through each detection tube, the gas flow area at the corresponding position, A calculator capable of calculating a calorific value of the gas flowing through the pipe;
And a determination unit that compares the calculated calorific value of each gas with the reference calorie and determines a charging condition for each position of the treated material according to the result. The method according to claim 1,
And a component analyzer communicating with each detection tube and capable of detecting a component of a gas flowing through each detection tube. The method according to claim 1,
And a purge gas supply device provided so as to be capable of supplying a purge gas to each of the detection tubes. The method of claim 3,
And an operation controller for controlling the purge gas supplier to operate alternately with the temperature meter and the pressure gauge. The method of claim 2,
Wherein the calculating unit calculates the utilization factor of the gas by using the component of the gas flowing through each detection tube. A process of preparing a treated material in a container;
Inserting a gas detector into the vessel;
Detecting a temperature of the gas at a plurality of positions in a radial direction of the container;
Detecting a dynamic pressure and a static pressure of the gas at a plurality of positions in a radial direction of the container;
Calculating the calorific value of the gas by using the temperature of the detected gas, the dynamic pressure, the static pressure, and the gas flow area at the corresponding position;
Comparing the calorific value of the calculated gas with the reference calorie, and determining a charging condition for each location of the treated product according to the result. The method of claim 6,
Detecting a component of the gas at a plurality of positions in a radial direction of the container;
Calculating a utilization rate of the gas using the component of the detected gas;
And determining a charging condition for each position of the treated material by using the utilization ratio of the calculated gas. delete delete The method of claim 7,
The process of determining a charging condition for each position of the object to be processed includes:
Determining the particle size condition of the processed material to be charged to the corresponding position according to the result of the comparison with the calorific value of the calculated gas and the reference calorie;
And determining a granular condition and an ingredient content condition of the processed material to be charged to the corresponding position in accordance with the comparison result, in comparison with the utilization rate of the calculated gas and the reference utilization factor. The method of claim 7,
Supplying the purge gas before or after the process of detecting the temperature of the gas or supplying purge gas before or after the process of detecting at least one of the pressure and the component of the gas of the gas. The method of claim 7,
A process of detecting the temperature of the gas, and a process of detecting at least one of the dynamic pressure, the static pressure and the component of the gas.

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